Self-recovery fuse with protective cover

Abstract

The utility model discloses a resettable fuse with a protective cover, which belongs to the technical field of resettable fuses, and comprises a bottom plate, the surface of the bottom plate is rotatably connected with a protective cover body through a hinge, the surface of the bottom plate is fixedly connected with two supporting plates, the surface of the bottom plate is fixedly connected with two clamping rings, and the protective cover body is fixedly connected with the clamping rings. A fuse body is clamped on the surfaces of the two clamping rings, the other clamping ring is fixedly connected to the inner wall of the protective cover body, grooves are formed in the two ends of the protective cover body, a limiting block is fixedly connected to the surface of the bottom plate, a limiting assembly is fixedly connected to the surface of the protective cover body, and the limiting assembly comprises a shell, a sliding block, an insertion rod and a spring. Through the arrangement of the plurality of clamping rings, the fuse body can be conveniently clamped and fixed, through the arrangement of the bottom plate and the protective cover body, the fuse body can be conveniently protected, and through the arrangement of the two supporting plates, a wire of the fuse body can be conveniently supported.

Description

Technical Field

[0001] The utility model relates to the technical field of resettable fuses, and more specifically, to a resettable fuse with a protective cover. Background Art

[0002] The resettable fuse element is connected in series in the circuit. Under normal circumstances, it is in a low-resistance state to ensure the normal operation of the circuit. When the circuit is short-circuited or an abnormally large current flows in, the self-heating of the element increases its impedance, limiting the current to a small enough level to provide overcurrent protection. At the same time, when the external environment temperature rises sharply, it can provide overtemperature protection when the environment reaches the product switch temperature.

[0003] The current resettable fuses are directly exposed to the external environment after installation and are easily damaged by external factors, which may cause the resettable fuses to be damaged and unable to work normally. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a resettable fuse with a protective cover, which has the characteristic of protecting the resettable fuse.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides a resettable fuse with a protective cover, including a base plate, the surface of the base plate is rotatably connected to a protective cover body through a hinge, two support plates are fixedly connected to the surface of the base plate, two clamping rings are fixedly connected to the surface of the base plate, the fuse body is clamped on the surfaces of the two clamping rings, another clamping ring is fixedly connected to the inner wall of the protective cover body, grooves are provided at both ends of the protective cover body, a limiting block is fixedly connected to the surface of the base plate, a limiting assembly is fixedly connected to the surface of the protective cover body, and the limiting assembly includes a shell, a slider, an insertion rod and a spring.

[0008] When a resettable fuse with a protective cover according to the technical solution is used, a plurality of clamping rings are provided to facilitate clamping and fixing of the fuse body, a bottom plate and a protective cover body are provided to facilitate protection of the fuse body, and two supporting plates are provided to facilitate supporting the wires of the fuse body.

[0009] Furthermore, the shell surface is fixedly connected to the protective cover body surface, the slider is slidably connected to the inner wall of the shell, the insertion rod is fixedly connected to the upper surface of the slider, the insertion rod is slidably connected to the shell surface, one end of the spring is fixedly connected to the lower surface of the slider, and the other end of the spring is fixedly connected to the inner wall of the shell.

[0010] Furthermore, a plurality of heat dissipation holes are provided on the surface of the protective cover body.

[0011] Furthermore, a plurality of mounting holes are provided on the surface of the bottom plate.

[0012] Furthermore, the two support plates are both made of insulating material.

[0013] Furthermore, a conical surface is provided on the surface of the insertion rod.

[0014] (3) Beneficial effects

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The resettable fuse with a protective cover is convenient for clamping and fixing the fuse body by providing a plurality of clamping rings, convenient for protecting the fuse body by providing a bottom plate and a protective cover body, and convenient for supporting the wires of the fuse body by providing two supporting plates;

[0017] 2. The resettable fuse with a protective cover is provided with a limit assembly so that the spring drives the insertion rod to be inserted into the surface of the limit block, thereby facilitating the fixing of the protective cover body on the surface of the bottom plate, and facilitating the rapid dissipation of the heat generated by the fuse body by providing heat dissipation holes, so that the fuse body can be quickly restored to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a side view of the structure of the utility model;

[0021] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the structure of the utility model when viewed from above.

[0023] The symbols in the accompanying drawings are:

[0024] 1. Bottom plate;

[0025] 2. Protective cover body;

[0026] 3. Support plate;

[0027] 4. Snap ring;

[0028] 5. Fuse body;

[0029] 6. Groove;

[0030] 7. Limit block;

[0031] 8. Limiting assembly; 801. Housing; 802. Sliding block; 803. Inserting rod; 804. Spring;

[0032] 9. Heat dissipation holes;

[0033] 10. Mounting hole. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0035] Example:

[0036] The following is combined with Figure 1-4 The utility model is described in further detail.

[0037] See also Figure 1-4 The utility model provides a technical solution: a self-resetting fuse with a protective cover, comprising a bottom plate 1, a protective cover body 2 is rotatably connected to the surface of the bottom plate 1 through a hinge, two support plates 3 are fixedly connected to the surface of the bottom plate 1, two snap rings 4 are fixedly connected to the surface of the bottom plate 1, and a fuse body 5 is clamped on the surfaces of the two snap rings 4, another snap ring 4 is fixedly connected to the inner wall of the protective cover body 2, grooves 6 are provided at both ends of the protective cover body 2, a limiting block 7 is fixedly connected to the surface of the bottom plate 1, and a limiting component 8 is fixedly connected to the surface of the protective cover body 2, and the limiting component 8 includes a shell 801, a slider 802, a plug rod 803 and a spring 804, and a plurality of snap rings 4 are provided to facilitate clamping and fixing the fuse body 5, and the bottom plate 1 and the protective cover body 2 are provided to facilitate protection of the fuse body 5, and the two support plates 3 are provided to facilitate supporting the wires of the fuse body 5.

[0038] Specifically, the surface of the shell 801 is fixedly connected to the surface of the protective cover body 2, the slider 802 is slidably connected to the inner wall of the shell 801, the insertion rod 803 is fixedly connected to the upper surface of the slider 802, the insertion rod 803 is slidably connected to the surface of the shell 801, one end of the spring 804 is fixedly connected to the lower surface of the slider 802, and the other end of the spring 804 is fixedly connected to the inner wall of the shell 801.

[0039] By adopting the above technical solution, by setting the insertion rod 803, the spring 804 drives the insertion rod 803 to be inserted into the surface of the limit block 7, so as to facilitate fixing the protective cover body 2 on the surface of the base plate 1, and by moving the slider 802, it is convenient to drive the insertion rod 803 to disengage from the limit block 7, so as to facilitate opening the protective cover body 2.

[0040] Specifically, a plurality of heat dissipation holes 9 are formed on the surface of the protective cover body 2 .

[0041] By adopting the above technical solution and providing the heat dissipation holes 9, the heat generated by the fuse body 5 can be quickly dissipated, so that the fuse body 5 can be quickly restored to use.

[0042] Specifically, a plurality of mounting holes 10 are formed on the surface of the bottom plate 1 .

[0043] By adopting the above technical solution and providing a plurality of mounting holes 10 , it is convenient to fix the base plate 1 by bolts.

[0044] Specifically, the two support plates 3 are both made of insulating material, and the surface of the insertion rod 803 is provided with a conical surface.

[0045] By adopting the above technical solution and providing a conical surface, it is convenient to insert the insertion rod 803 into the insertion hole.

[0046] The working principle of the utility model is as follows: when in use, the base plate 1 is fixed by the mounting holes 10 and bolts, the fuse body 5 is clamped on the surface of the base plate 1 through the two clamping rings 4, and then the wire is clamped on the surfaces of the two support plates 3, the protective cover body 2 is rotated through the hinge, driving another clamping ring 4 to be clamped on the surface of the fuse body 5, so as to improve the fixing effect of the fuse body 5, and then the spring 804 drives the insertion rod 803 to be inserted into the surface of the limit block 7 to fix the protective cover body 2. Under the action of the protective cover body 2, the fuse body 5 is protected. After the fuse body 5 takes effect, the heat generated by the fuse body 5 is quickly dissipated through the heat dissipation holes 9, so that the fuse body 5 can be quickly restored to use.

[0047] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A resettable fuse with a protective cover, comprising a base plate (1), characterized in that: The surface of the base plate (1) is rotatably connected to a protective cover body (2) via a hinge, the surface of the base plate (1) is fixedly connected to two support plates (3), the surface of the base plate (1) is fixedly connected to two snap rings (4), the surfaces of the two snap rings (4) are snapped with a fuse body (5), the inner wall of the protective cover body (2) is fixedly connected to another snap ring (4), both ends of the protective cover body (2) are provided with grooves (6), the surface of the base plate (1) is fixedly connected to a limiting block (7), the surface of the protective cover body (2) is fixedly connected to a limiting assembly (8), and the limiting assembly (8) comprises a shell (801), a slider (802), an insertion rod (803) and a spring (804).

2. A resettable fuse with a protective cover according to claim 1, characterized in that: The surface of the shell (801) is fixedly connected to the surface of the protective cover body (2), the slider (802) is slidably connected to the inner wall of the shell (801), the insertion rod (803) is fixedly connected to the upper surface of the slider (802), the insertion rod (803) is slidably connected to the surface of the shell (801), one end of the spring (804) is fixedly connected to the lower surface of the slider (802), and the other end of the spring (804) is fixedly connected to the inner wall of the shell (801).

3. A resettable fuse with a protective cover according to claim 1, characterized in that: A plurality of heat dissipation holes (9) are provided on the surface of the protective cover body (2).

4. The resettable fuse with a protective cover according to claim 1, characterized in that: A plurality of mounting holes (10) are provided on the surface of the bottom plate (1).

5. The resettable fuse with a protective cover according to claim 1, characterized in that: The two support plates (3) are both made of insulating material.

6. The resettable fuse with a protective cover according to claim 1, characterized in that: The surface of the insertion rod (803) is provided with a conical surface.

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